Nut-tapping machine.



NUT TAPPfNG MACHINE.' APPucATloN FILED Juw. 1915.

Patented Dee. 26,1916.

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T. M. DANIELS &1. C. HOLSCHEMACHER.

NU`h TAPPING MACHINE.

APPucATmN FILED JULY 8. 191s.

1,209,677. Patented Dec. 26,1916.

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WITNESSES INVENTOHS rn: :vonnis nen nu., rumumu.. wAs'nlrvcmN. Ui.

THOMAS MARION DANIELS AND JULIUS C. I-IOLSCI-IEMACHER, OF CHICAGO, ILLINOIS.

NUT-TAPPING MACHINE.

To all whom t may concern:

Be it known'that we, THOMAS M. DANIELS and JULIUS C. HOLSGHEMAGHEP., citizens of the United States, and residents of Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Nut-Tapping Machines, of which the following is a specification.

This invention is an improvement over the machine shown and described in our Letters Patent of the United States, bearing Number 1,141,779, issued to us on the 1st day of June, 1915, and reissued as Patent 14,086, dated March 14, 1916, wherein the tapped nuts are shown as being swept off the table carrying the same by means of an inclined arm 55, and one of the main objects hereof is to provide positive nut positioning and kick-0E means to replace the said arm.

Qur invention is fully described in the following specilication, of which the accompanying drawings form a part, in which like characters refer to like parts in each of the views, and in which Fig. 1 is a fragmentary plan view of the table for carrying the nut blanks, showing our present invention applied thereto;

Fig. 2 is a section taken on the line 2-2 of Fig. 1;

Fig. 3 is a plan view of a plate provided with a cam groove which we employ;

Fig. 4 is a view similar to Fig. 1, but showing a modified formof our invention;

Fig. 5 is a view thereof with an arrangement of cams thereover, all the parts being in operative positions; and

Fig. 6 is a section taken on the line 6 6 of Fig. 5.

1n the drawings forming a part of this application we have shown a table 7 of circular formation provided with a plurality of radial pockets 8 for the reception of the nut blanks fed thereto in any desired manner, said table being revoluble as will be `seen in the aforesaid patent.

Movably mounted in the slideway walls of each pocket 8 is a slide 9 having two fixed arms 1() and an adjustable arm 11 for positioning the nut blank 12, Fig. 6, held therebetween, said slide having a slot 13 therein for the reception of 4a lever 14 pivoted thereto by means of a pin 15, the rocking of said lever on its pivot reciprocating the slide radially of the table 7 and in the respective pocket.. Tb@ level' 14: iS pvoted at Specification of Letters Patent.

Appncation med July s, 1915.

Patented Dec. 26, 1916.

Serial N o. 38,667.

16 to an arm carried by the revolving table 7, shown at 17, Fig. 2, the table, arms, slides, and levers, traveling as a unit.

Secured against movement beneath the table 7 is a plate 18 provided with a groove 19 concentric with the center thereof, which groove extends for approximately 330 degrees of a circle; the end of the concentric circle designated 20 merges with an inwardly inclined groove 21 extended for a relatively great distance and connects with a relatively short, reversely inclined groove 22 terminating in a groove 23 concentric with the center of the plate 18, this plate being shown reduced in size with respect to the table 7; the groove 23 connects with the main concentric groove 19 by means of an inclined groove 24, thus forming a'4 continuous groove concentric with the center of the plate at two portions of greatly ditfering lengths joined by inclined cam portions.

The lever 14 carries a roller 25 arranged in the groove of the plate 18 and, in the revolution of the table 7, the lever 14 is moved on its pivot to move the respective slide on the table 7 when the roller 25 reaches the inclined grooves 21, 22, and 24.

Assuming that the table 7 has carried a nut, now tapped, to a point over the beginning of the inclined groove 21; the roller 25 is now moved inwardly along the inclined groove 21, in the continued revolution of the table 7, and moves the respective slide 9 outwardly of the table to its full limit, this being sulliciently far to permit the lin ished nut to drop over the edge of said table into a suitable receptacle; the roller 25 then moves outwardly along the inclined groove 22 and moves the slide 9 inwardly again but not to its full limit, in which position the nut blank to be tapped may be fed thereto; continued table revolution carries the roller to the inclined groove 24 and the roller 25 moves outwardly to move the slide 9 to its innermost limit of movement, wherein it remains for the greater part of the revolution of the table to enable the nut tapping apparatus to perform its work on the nut.

The form shown in Figs. 4 to 6, inclusive, operates on the same principle but is much more economical in manufacture and installation. In this form the lever 14 is dispensed with and a roller 26 is provided on the upper side of the slide 9 ada ted to engage with a iXed inclined plate 2 to move the slide .9 outwardly to discharge the finished nut, and with an inclined plate 28 to return said slide to normal position, this latter plate being formed into a stepped cam if desired to enable the feeding of a nut blank to the slide.

In this form, the slide may be frictionally held against accidental displacement, or a spring may be provided therefor to return the same to normal position, but we prefer to have the slide freely movable in view of the fact that the tap holds the nut blank in place, and the blank holds the slide in place during the tapping process.

Our machine embodies a. plurality of nut blank slides 9 and connected parts, the description having been confined to but one, although it will be understood that the construction described, in either form, is duplicated for each of the other slides.

It will thus be seen that the tapped nuts are positively discharged from the machine at a predetermined point, by means of a roller in operative connection with each slide and with a cam groove or cam edge, and, while we have shown two preferred forms, it will be obvious that other forms may be designed and still be within the scope of the following claims, and the spirit of our invention.

Having fully described our invention, what we claim as new, and desire to secure by Letters Patent, is zl. In a nut tapping machine, the combination with a revoluble nut carrying table provided with open ended slideways, of a movable slide extending through each slideway, adapted to engage opposite sides of the blank to hold the blank in nut tapping position, and actuating means constructed and arranged for reciprocating said slides successively in their slideways in one direction to position incoming blanks on said table and in the opposite direction to discharge tapped 'nuts therefrom in the travel of said table.

2. In a nut tapping machine, the combination with a nut carrying table provided with slideways, of a movable slide in each slideway adapted to engage side portions of the blank and cooperating with said slideway to hold the blank during the tapping of the same, and positive actuating means for successively causing said slides to reciprocate in their slideways in one direction to position incoming blanks in their pockets and in the opposite direction to discharge tapped nuts therefrom.

3. The combination in a nut tapping machine provided with a revolving table having radially arranged pockets therein, of a slide movable in the walls of each pocket, means on said slide for holding a nut blank, a cam for moving said slides outwardly individually and successively to discharge the tapped nuts from said table, a cam for moving said slides into nut blank receiving position lindividually and successively, a cam for returning said slides to normal nut holding positions, and means on each slide in operative connection with said cams.

4. The combination in a nut tapping machine provided with a revolving table having radially arranged pockets therein, of a slide movable in each pocket, means thereon for holding a nut blank, a plate adjacent said table provided with a continuous groove concentric with the center of said plate for a portion of its length and inclined in reverse directions for other portions of its length, a lever in pivotal connection with said table and with the respective slide, and a roller on said lever arranged in said groove.

5. In a nut tapping machine provided with a revolving table, a slide movable thereon and having oppositely disposed arms adapted to receive and hold a nut blank, cam means for moving the tapped slide to discharge said nut from said table, and cam means for returning said slide to normal blank holding position.

6. In a nut tapping machine provided with a. revolving table having a slideway, a slide movable therein and constructed to receive and hold a nut blank, cam means for moving said slide to discharge said nut from said table, cam means for moving said slide into nut receiving position, and cam means for returning said slide and nut into nut tapping position.

7 In a nut tapping machine, the combination of a nut carrying revoluble table having a slideway provided with a discharge aperture therein, and a nut blank receiving and holding element slidably mounted in the walls of said slideway and constructed and arranged with reference thereto for reciprocative movement therethrough in one direction to position the blank and in another to discharge the tapped nut through said discharge aperture.

In testimony whereof we have signed our names to this specication in the presence of two subscribing witnesses.

rrHoMAs MARION DANiELs. JuLiUs o. HoLsonEMaoHnn.

Witnesses:

JULiUs J. AUGUSTUS, I-IENRY HERMES.

Gopies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents,

Washington, D. C. I

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